The new Quinta continues with the outstanding scale and depth of its
predecessor and builds on it with the use of new drive units, crossover
and cabinet design. It’s a true full-range, dynamic loudspeaker that
relays anything from jazz trios to full scale symphonic music with
authority and detail, yet also delicacy.
Room Positioning
Opera Quinta is a floor standing loudspeaker. It is inadvisable to place
the loudspeaker in a corner, and the recommended distance from side
walls is at least 30cm. As always, the best position within the room
will be found while experimenting. Even though the reflex ports are
rear-mounted, it is sufficient to maintain a distance of just a few inches
between the rear of the loudspeaker and the rear wall.
System
The Opera Quinta differs from the previous model of the same name by
having a new cabinet, new components and new crossover. The cabinet
is slightly larger than before, with an internal volume of around 60 litres
and is divided into two chambers; the lower chamber, of roughly 40
litres houses two bass drivers. The upper chamber, of roughly 20 litres
houses the upper bass driver. The three reflex ports are mounted on the
loudspeaker`s rear panel. There are 4 gold plated terminal connectors
and the speaker is bi-wirable if required.
Components
All models of the Linea Classica Series use the same drive units; the one
inch tweeter (the same used in the Callas SP) is a silk dome unit, with
ferrofluid in the air gap and having a wide rear decompression chamber.
The qualities of this SEAS tweeter are well known and appreciated.
The woofer, also made by SEAS, was developed specially for this
line of loudspeakers. It is a 6.5 inch unit with 18cm chassis, 38mm
voice coil, aluminium diaphragm and rubber outer suspension. It has
a dynamic mass appreciably higher than the norm, and an impedance
of 4 ohm. Two copper rings are fitted above and below the T-shaped
pole piece, which both reduce distortion and stabilize the magnetic flux.
Finally, the bullet-shaped phase plug in ABS helps to dissipate heat
and overcomes compression effects associated with normal dust-caps.
It also improves emission at the high-frequency end of the unit`s range.
The cast chassis, of aerodynamic design, is fully open even beneath the
inner suspension.
System
The Opera Quinta differs from the previous model of the same name by
having a new cabinet, new components and new crossover. The cabinet
is slightly larger than before, with an internal volume of around 60 litres
and is divided into two chambers; the lower chamber, of roughly 40
litres houses two bass drivers. The upper chamber, of roughly 20 litres
houses the upper bass driver. The three reflex ports are mounted on the
loudspeaker`s rear panel. There are 4 gold plated terminal connectors
and the speaker is bi-wirable if required.
Crossover
In designing the new Classic Series, particular attention has been paid
to electrical impedance.
This is to ensure that the loudspeaker will present a load compatible
with every type of amplifier.
The minimum impedance for a nominally 6 Ohm loudspeaker under
DIN regulations is not less than 4.8 Ohms at the lowest point of the
impedance curve. Opera Quinta adhere to this norm.
The electrical impedance curve of the Opera Quinta is in fact always
above 5.9 Ohm (5.54 Ohm real impedance at 20KhZ) and although
not completely resistive, it is extremely regular with phase rotations
close to zero over a wide range of frequencies from 200Hz upwards.
This ease of drive makes the Opera Quinta a rarer breed, opposed to
prevailing tendencies in loudspeaker design.
The Opera Quinta is a very easy loudspeaker to drive, and best
results can be achieved with any type of amplifier, whether valve or
solid-state.
The crossover of the Opera Quinta is a `two-and-a-half-way`, with
three bass units connected in quasi-series
Cabinet
All Linea Classica models have their cabinets in shaped MDF, with
sides veneered and lacquered using real wood, while the remaining
sides are finished in leather. The size of the front panel, following
Opera’s tradition, is large enough to hold the loudspeakers. The inside
of the cabinet is divided into two separate chambers, which not only
reinforces the structure but also raises the frequency of the first normal
resonance mode. The inside of the cabinet is filled with quality acrylic
wadding, which helps eliminate internal reflections and resonance and
assists bass frequency damping. The bass reflex ports are placed on
the rear panel.
System:
Floorstanding column two separated reflex loaded chambers
Drive units:
3 x 6.5 inch bass drivers - aluminium cone
1 x 1 inch tweeter - fabric dome
Number of ways:
2 1/2 way
Frequency response:
30-20000 Hz
Cross-over: low pass:
Nearly-series for woofers 6 dB low pass
24 dB/octave for the high pass
Crossover frequency 2300 Hz approx
Power handling:
210 watt RMS
Recommended amplifier:
10 to 210 Watt RMS or more (without clipping)
Sensitivity:
89 dB/1watt/1 meter
Nominal Impedance:
6 ohm (8 max and 5.95 min from 100 to 20000 Hz with)
Room positioning:
At least 20-30 cm from rear room boundary
At least 20-30 cm from side room boundary
Dimension (H x W x D):
1175 x 240 x 395 mm (46,3 x 9,5 x 15,5 inch)
Weight:
34 Kg (75 lbs)
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